Resíduo de Tucumã (Astrocaryum aculeatum G. Mey) na alimentação de ovinos

Abstract

Identifying foods that can replace conventional foods in ruminant feeding is crucial for the sustainability of production systems, in addition to making them economically viable, sustainable and generating extra income for small producers. The objective of the study was to evaluate the effects of replacing corn (Zea mayes) with increasing levels (0, 5, 10, 15 and 20%) of Tucumã peel (A. aculeatum G. Mey) on consumption, nutrient digestibility and ingestive behavior. Five sheep with an average body weight of 45.0±5 kg were used, randomly distributed in a 5 x 5 Latin square design, for 75 days. There was no difference between treatments regarding consumption time (feeding, rumination and idleness). The intakes of dry matter (DMI), crude protein (CPB), organic matter (CMO), neutral detergent fiber (CFDN) and acid detergent fiber (CFDA) were not influenced (P > 0.05) by the levels of inclusion of Tucumã bark in the diet. However, the consumption of mineral matter (MM) showed an increasing linear effect (P<0.003). The digestibilities of DM, CP and NDF were not influenced by the inclusion levels of Tucumã peel. A decreasing linear effect (P < 0.05) on OM digestibility was observed, and a quadratic effect (P < 0.04) on ADF digestibility with increasing replacement of Tucumã peel. The inclusion of Tucumã bark up to 20% in the dry matter of the diet does not alter the nutrient consumption of sheep, but it interferes with BMD and DFDA.